ベラ・C・ルービン天文台は、世界最大のデジタルカメラによる観測画像を 2025年6月23日（現地時）に初公開しました。今後、このカメラを用いた大規模撮像探査プロジェクト「LSST（Legacy Survey of Space and Time）」が本格的に始まります。LSST には、国立天文台の研究者を含む日本の研究者も多く ...

Detail ： GJ 504 b is an exoplanet orbiting a sun-like star GJ 504. It is estimated to be three to six times more massive than Jupiter, making it the least massive planet ever directly imaged. This ...

Subaru HDS++ OPE file Editor (hoe) Subaru HDS++ OPE file Editor (hoe) is an application software to prepare observations with High Dispersion Spectrograph (HDS) and several other instruments of 8.2-m ...

An international team of astronomers has discovered a tightly packed cluster of supermassive black holes dating back 10.8 billion years―the most extreme concentration of ...

Important Notice for the MOS Service Program Important Notice for the MOS Service Program A conditional access to the Multi-Object Spectroscopy (MOS) Mode for Service Program has been available since ...

Service Program is for observing proposals which require less than or equal to 4 hours including all the "open-dome" calibrations and overheads. All Service Program observations will be executed by ...

MOIRCS Filters Broadband Filters The following table lists the broad-band filters currently installed in MOIRCS, together with their estimated sensitivities. Our broad band filters are designed to ...

The following tables list filters available for open use observation of the HSC, together with their sensitivities. The transmission curves measured at the center of filters are available as plots and ...

Applicants are requested to access the ProMS2.0 page to fill the webform for the application form and upload necessary files (e.g., PDF files of Scientific Justification). Please refer to ...

Performance of AO is characterized by a Strehl ratio (a peak intensity normalized by that of PSF without any turbulence) and FWHM of the PSF. These depend on a the AO guide star magnitude, seeing, sky ...

An international team of astronomers has solved one of the longstanding cosmic mysteries by uncovering direct evidence of a massive, long-lost object that collided with the Perseus cluster. Using high ...

すばる望遠鏡に、特殊な「複眼」が新たに装備されました。約 2400 個に及ぶ「目」を、広大なすばる望遠鏡の主焦点の視野に散りばめ、多数の天体からやって来た光を同時にプリズムで捉え、色に分けて観測します。これほどの探査性能を備えた8メートル級の望遠鏡は、すばる望遠鏡が世界で ...